Alcatel-Lucent 7710 SR SONET, Руководство по настройке

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Interface Configuration
7710 SR OS Interface Configuration Guide Page 293
Default
no feac-loop-respond
framing (DS-1)
Syntax framing { esf | sf | ds1-unframed }
Context config>port>>tdm>ds1
Description
This command specifies the DS-1 framing to be used with the associated channel.
Default
DS1: esf
Parameters
esf — Configures the DS-1 port for extended super frame framing.
sf — Configures the DS-1 port for super frame framing.
ds1-unframed — Specifies ds-1 unframed (G.703) mode for DS-1 interfaces. This parameter allows the
configuration of an unstructured DS-1 channel on a CES MDA. In G.704, timeslot 0 is used to carry
timing information by a service provider, thus, only 31 slots are made available to the end user. In
G.703, all 32 time slots are available to the end user. Timing is provided by the end user. When an e1-
unframed channel is shutdown, it sends the AIS pattern to the far-end DS-1 which does not react. The
operational status remains up and no alarms are generated while the near-end (shutdown) is
operationally down. This is normal behavior since the G.703 option does not have framing. G.703
framing is only applicable for FR, PPP, and C-HDLC encapsulations.
framing (E-1)
Syntax framing { no-crc-g704 | g704 | e1-unframed }
Context config>port>tdm>e1
Description
This command specifies the E-1 framing to be used with the associated channel .
Default
g704
Parameters
g704 — Configure the E-1 port for G.704 framing.
no-crc-g70 — Configures the E-1 for G.704 with no CRC4.
e1-unframed — Specifies E-1 unframed (G.703) mode for E-1 interfaces. This parameter also allows the
configuration of an unstructured E-1 channel on an ASAP or CES MDA. In G.704, timeslot 0 is used to
carry timing information by a service provider, thus, only 31 slots are made available to the end user. In
G.703, all 32 time slots are available to the end user. Timing is provided by the end user. When an e1-
unframed channel is shutdown, it sends the AIS pattern to the far-end E-1 which does not react. The
operational status remains up and no alarms are generated while the near-end (shutdown) is
operationally down. This is normal behavior since the G.703 option does not have framing. G.703
framing is only applicable for FR, PPP, and CHDLC and CEM encapsulations.